@article{JMLR:v18:16-258,
  author  = {Abhisek Kundu and Petros Drineas and Malik Magdon-Ismail},
  title   = {Recovering PCA and Sparse PCA via Hybrid-(l1,l2) Sparse Sampling of Data Elements},
  journal = {Journal of Machine Learning Research},
  year    = {2017},
  volume  = {18},
  number  = {75},
  pages   = {1--34},
  url     = {http://jmlr.org/papers/v18/16-258.html}
}